

Step 2: While rebooting, hold down the Option key button to select the attached boot drive.
#The best volume repair for mac mac#
Step 1: Insert the USB boot drive to Mac and reboot the system. If you're struggling with the 'Couldn't Unmount Disk' error, the way to fix this is to boot the Mac system from another drive and then run Disk Utility on the disk.Įnsure that the USB boot drive is attached to the device. In case the error still occurs, try repairing the drive using the USB boot drive method. Step 5: Click the unmount button in the toolbar or beside the disk set name.Īfter following these steps, you can erase the Mac hard drive volume. Step 4: In the Disk-Utility app, select the disk that you want to unmount in the sidebar. Step 3: Double-click on the Disk Utility icon. Step 2: Type Disk Utility in the search field. Step 1: Click on the Spotlight icon from the menu bar. To access the disk utility, follow the step below: To unmount the volume, start by accessing the disk utility. The simplest solution to unmount volume for repair is to unmount the disk on disk utility. Method 1: Right Steps to Unmount Volume for Repair on Disk Utility
#The best volume repair for mac software#
Other causes can be system related like Error in Bootstrap, Improper Kernel Installation, Hardware or Software crash, and many more. These are a few of the reasons that prompt the 'Couldn't Unmount Disk' error. It can be due to the software or accessing an unauthorized website.

The other reasons for 'Couldn't Unmount Volume' error are: The causes of this error are several, starting with the abrupt shutdown and inconsistent file system. What causes the 'Couldn't Unmount Volume' error?

Part 1- What does "couldn't unmount disk" mean?
